wampum
/ˈwɒmpəm/noun
mass noun
- historical a quantity of small cylindrical beads made by North American Indians from shells, strung together and worn as a decorative belt or other decoration or used as money〈史〉（北美印第安人用作装饰或货币的）贝壳串珠。
词源
from Algonquian wampumpeag, from wap 'white'+umpe 'string'+the plural suffix -ag.